Re: RTLinux vs RTAI and EMC

["Shelbyville Design & Signworks" <signworks-at-mcleodusa.net>]

Random following erorrs mostly, The machine
I retrofitted has rack & pinion drive, originally
had 40:1 zero backlash reducers and servomotor
with syncros. The gantry is 13' long. (if you've ever
seen a esab cnc router, it's the same machine)
work surface is 101" x 148".

I'm at the point of working my ass off and just
getting 3 340s and using the original motors and
gearboxes, with an encoder directly driven off the
rack(the syncros were originally mounted this way.
(just gotta find the $$$$)

Erie Patsellis
Shelbyville Design & Signworks
1309 W. S. 7th Street
Shelbyville, IL 62565
(217)774-4444
visit our website at www.shelbyvilledesign.com
----- Original Message -----
From: "Ray Henry" <rehenry-at-up.net>
To: "Multiple recipients of list" <emc-at-nist.gov>
Sent: Sunday, June 09, 2002 9:26 PM
Subject: Re: RTLinux vs RTAI and EMC


>
>
> Erie
>
> What kinds of errors or symptoms do you get with freqmod?
>
> Ray
>
>
> On Sunday 09 June 2002 11:13, you wrote:
> > I'd have to second this, as I have a nonworkable freqmod.o setup that
> > will go back to steppermod.o as soon as I can find some time.
> >
> > Erie Patsellis
> > Shelbyville Design & Signworks
> > 1309 W. S. 7th Street
> > Shelbyville, IL 62565
> > (217)774-4444
> > visit our website at www.shelbyvilledesign.com
> > ----- Original Message -----
> > From: "Tim Goldstein" <timg-at-ktmarketing.com>
> > To: "Multiple recipients of list" <emc-at-nist.gov>
> > Sent: Sunday, June 09, 2002 10:42 AM
> > Subject: RE: RTLinux vs RTAI and EMC
> >
> > > Ray,
> > >
> > > Unless the speed of freqmod can be drastically increased then
steppermod
> > > is needed for step and direction servos (Gecko, Mr Bill, Rutex).
> > >
> > > Tim
> > > [Denver CO]
> > >
> > > > Do you really need steppermod.  Freqmod will work nearly as
> > > > well but not
> > > > quite as fast.
>
>